161195564 has 12 divisors (see below), whose sum is σ = 298686024. Its totient is φ = 75856704.

The previous prime is 161195561. The next prime is 161195591. The reversal of 161195564 is 465591161.

161195564 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (161195561) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1185194 + ... + 1185329.

It is an arithmetic number, because the mean of its divisors is an integer number (24890502).

Almost surely, 2^161195564 is an apocalyptic number.

It is an amenable number.

161195564 is a deficient number, since it is larger than the sum of its proper divisors (137490460).

161195564 is a wasteful number, since it uses less digits than its factorization.

161195564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2370544 (or 2370542 counting only the distinct ones).

The product of its digits is 32400, while the sum is 38.

The square root of 161195564 is about 12696.2815028653. The cubic root of 161195564 is about 544.2323609082.

The spelling of 161195564 in words is "one hundred sixty-one million, one hundred ninety-five thousand, five hundred sixty-four".